As if.
But seriously, a lot of universities have put most of their popular courses online. MIT, Yale, Berkeley I've found, I'm sure there are others.
The course materials: lectures, homework, handouts, lecture video, and sometimes tests are posted online.
You don't "take" the course or get credit - but the information is there if you have an interest.
Not for the faint-hearted I'm sure. But curious what music students at Yale learn about? I guess it's all there if you have the time to read through it. The only thing missing from most of the courses would be the books. But there is so much info online these days you might get by with lecture notes and Wikipedia
Yale:
http://oyc.yale.edu/ Art, Music, Physics, Chemistry, Political Science, Literature, Atronomy
MIT:
http://ocw.mit.edu/OcwWeb/web/home/home/index.htm Engineering, Architecture, Management, and
Game Design (from board games to digital).
Berkeley:
http://webcast.berkeley.edu/courses.php Economics, Biology, Engineering, Philosophy, Physics and more
I found this out reading about Game Theory, and there was a link to the Yale course on that subject I didn't get past the first lecture yet. It's slow going, but I found it very interesting.
Yale Game Theory:
http://oyc.yale.edu/economics/game-theory/contents/sessions.html